Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effects of cocaine administration on receptor binding and subunits mRNA ofGABA(A)-benzodiazepine receptor complexes
Autore:
Suzuki, T; Abe, S; Yamaguchi, M; Baba, A; Hori, T; Shiraishi, H; Ito, T;
Indirizzi:
Univ Tsukuba, Inst Clin Med, Dept Psychiat, Tsukuba, Ibaraki 3058575, Japan Univ Tsukuba Tsukuba Ibaraki Japan 3058575 sukuba, Ibaraki 3058575, Japan Okayama Univ, Fac Educ, Okayama, Japan Okayama Univ Okayama JapanOkayama Univ, Fac Educ, Okayama, Japan
Titolo Testata:
SYNAPSE
fascicolo: 2, volume: 38, anno: 2000,
pagine: 198 - 215
SICI:
0887-4476(200011)38:2<198:EOCAOR>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-AMINOBUTYRIC-ACID; MESSENGER-RNA EXPRESSION; CENTRAL-NERVOUS-SYSTEM; RAT SUBSTANTIA-NIGRA; PREFRONTAL CORTEX; BETA-SUBUNIT; GENE-EXPRESSION; ALPHA-SUBUNIT; BETA-2-ADRENERGIC RECEPTOR; BENZODIAZEPINE RECEPTORS;
Keywords:
GABA(A) receptor; subunit mRNA; cocaine; behavioral sensitization; drug abuse; withdrawal from cocaine;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
127
Recensione:
Indirizzi per estratti:
Indirizzo: Suzuki, T Univ Tsukuba, Inst Clin Med, Dept Psychiat, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058575, Japan Univ Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki Japan 3058575 Japan
Citazione:
T. Suzuki et al., "Effects of cocaine administration on receptor binding and subunits mRNA ofGABA(A)-benzodiazepine receptor complexes", SYNAPSE, 38(2), 2000, pp. 198-215

Abstract

The effects of intermittent intraperitoneal (i.p.) administration of cocaine (20 mg/kg) on GABA(A)-benzodiazepine (BZD) receptors labeled by t-[S-35]butylbicyclophosphorothionate (TBPS), and on several types of mRNA subunitswere investigated in rat brain by in vitro quantitative receptor autoradiography and in situ hybridization. Phosphor screen imaging with high sensitivity and a wide linear range of response was utilized for imaging analysis. There was a significant decrease in the level of alpha 1, alpha 6, beta 2,beta 3, and gamma 2 subunits mRNA, with no alteration of [S-35]TBPS binding in any regions in the brain of rats at 1 h following a single injection of cocaine. In chronically treated animals, the mean scores of stereotyped behavior were increased with the number of injections, The level of beta 3 subunit mRNA was decreased in the cortices and caudate putamen, at 24 h after a final injection of chronic administrations for 14 days. In the withdrawal from cocaine, the frontal cortex and hippocampal complexes showed a significant increase in [S-35]TBPS binding and alpha 1 and beta 3 subunit mRNA in the rats 1 week after a cessation of chronic administration of cocaine; These findings suggest that the disruption of GABA(A)-BZD receptor formation is closely involved in the development of cocaine-related behavioral disturbances. Further studies on the physiological functions on GABA(A)-BZD receptor complex will be necessary for an explanation of the precise mechanisms underlying the acute effects, development of hypersensitization, and withdrawal state of cocaine. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 16:07:11